<style>
body {
  display: none;
  margin: 0;
}
.item {
  max-width: 200px;
  border: 2px solid red;
  margin: 1px;
}
</style>
<div id=container>
<div class=item>Lorem ipsum dolor sit amet, consectetur adipiscing elit, seddo eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim adminim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip exea commodo consequat. Duis aute irure dolor in reprehenderit in voluptatevelit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecatcupidatat non proident, sunt in culpa qui officia deserunt mollit anim id estlaborum.</div>
</div>
<script>
/*!
 * Masonry PACKAGED v3.2.2
 * Cascading grid layout library
 * http://masonry.desandro.com
 * MIT License
 * by David DeSandro
 */
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        }

        function f(a) {
            return a.replace(/(.)([A-Z])/g, function(a, b, c) {
                return b + "-" + c
            }).toLowerCase()
        }

        function g(c, g, l, n, o, p) {
            function q(a, c) {
                if ("string" == typeof a && (a = h.querySelector(a)), !a ||
                    !m(a)) return void(i && i.error("Bad " +
                      this.constructor.namespace + " element: " + a));
                this.element = a, this.options = b({},
                    this.constructor.defaults), this.option(c);
                var d = ++r;
                this.element.outlayerGUID = d, s[d] = this, this._create(),
                this.options.isInitLayout && this.layout()
            }
            var r = 0,
                s = {};
            return q.namespace = "outlayer", q.Item = p, q.defaults = {
                containerStyle: {
                    position: "relative"
                },
                isInitLayout: !0,
                isOriginLeft: !0,
                isOriginTop: !0,
                isResizeBound: !0,
                isResizingContainer: !0,
                transitionDuration: "0.4s",
                hiddenStyle: {
                    opacity: 0,
                    transform: "scale(0.001)"
                },
                visibleStyle: {
                    opacity: 1,
                    transform: "scale(1)"
                }
            }, b(q.prototype, l.prototype), q.prototype.option = function(a) {
                b(this.options, a)
            }, q.prototype._create = function() {
                this.reloadItems(), this.stamps = [],
              this.stamp(this.options.stamp), b(this.element.style,
                  this.options.containerStyle), this.options.isResizeBound &&
                this.bindResize()
            }, q.prototype.reloadItems = function() {
                this.items = this._itemize(this.element.children)
            }, q.prototype._itemize = function(a) {
                for (var b = this._filterFindItemElements(a), c =
                    this.constructor.Item, d = [], e = 0, f = b.length; f > e;
                    e++) {
                    var g = b[e],
                        h = new c(g, this);
                    d.push(h)
                }
                return d
            }, q.prototype._filterFindItemElements = function(a) {
                a = d(a);
                for (var b = this.options.itemSelector, c = [], e = 0, f =
                    a.length; f > e; e++) {
                    var g = a[e];
                    if (m(g))
                        if (b) {
                            o(g, b) && c.push(g);
                            for (var h = g.querySelectorAll(b), i = 0, j =
                                h.length; j > i; i++) c.push(h[i])
                        } else c.push(g)
                }
                return c
            }, q.prototype.getItemElements = function() {
                for (var a = [], b = 0, c = this.items.length; c > b; b++)
                  a.push(this.items[b].element);
                return a
            }, q.prototype.layout = function() {
                this._resetLayout(), this._manageStamps();
                var a = void 0 !== this.options.isLayoutInstant ?
                  this.options.isLayoutInstant : !this._isLayoutInited;
                this.layoutItems(this.items, a), this._isLayoutInited = !0
            }, q.prototype._init = q.prototype.layout, q.prototype._resetLayout
            = function() {
                this.getSize()
            }, q.prototype.getSize = function() {
                this.size = n(this.element)
            }, q.prototype._getMeasurement = function(a, b) {
                var c, d = this.options[a];
                d ? ("string" == typeof d ? c = this.element.querySelector(d) :
                    m(d) && (c = d), this[a] = c ? n(c)[b] : d) : this[a] = 0
            }, q.prototype.layoutItems = function(a, b) {
                a = this._getItemsForLayout(a), this._layoutItems(a, b),
              this._postLayout()
            }, q.prototype._getItemsForLayout = function(a) {
                for (var b = [], c = 0, d = a.length; d > c; c++) {
                    var e = a[c];
                    e.isIgnored || b.push(e)
                }
                return b
            }, q.prototype._layoutItems = function(a, b) {
                function c() {
                    d.emitEvent("layoutComplete", [d, a])
                }
                var d = this;
                if (!a || !a.length) return void c();
                this._itemsOn(a, "layout", c);
                for (var e = [], f = 0, g = a.length; g > f; f++) {
                    var h = a[f],
                        i = this._getItemLayoutPosition(h);
                    i.item = h, i.isInstant = b || h.isLayoutInstant, e.push(i)
                }
                this._processLayoutQueue(e)
            }, q.prototype._getItemLayoutPosition = function() {
                return {
                    x: 0,
                    y: 0
                }
            }, q.prototype._processLayoutQueue = function(a) {
                for (var b = 0, c = a.length; c > b; b++) {
                    var d = a[b];
                    this._positionItem(d.item, d.x, d.y, d.isInstant)
                }
            }, q.prototype._positionItem = function(a, b, c, d) {
                d ? a.goTo(b, c) : a.moveTo(b, c)
            }, q.prototype._postLayout = function() {
                this.resizeContainer()
            }, q.prototype.resizeContainer = function() {
                if (this.options.isResizingContainer) {
                    var a = this._getContainerSize();
                    a && (this._setContainerMeasure(a.width, !0),
                        this._setContainerMeasure(a.height, !1))
                }
            }, q.prototype._getContainerSize = k,
            q.prototype._setContainerMeasure = function(a, b) {
                if (void 0 !== a) {
                    var c = this.size;
                    c.isBorderBox && (a += b ? c.paddingLeft + c.paddingRight +
                        c.borderLeftWidth + c.borderRightWidth : c.paddingBottom
                        + c.paddingTop + c.borderTopWidth +
                        c.borderBottomWidth), a = Math.max(a, 0),
                    this.element.style[b ? "width" : "height"] = a + "px"
                }
            }, q.prototype._itemsOn = function(a, b, c) {
                function d() {
                    return e++, e === f && c.call(g), !0
                }
                for (var e = 0, f = a.length, g = this, h = 0, i = a.length; i >
                    h; h++) {
                    var j = a[h];
                    j.on(b, d)
                }
            }, q.prototype.ignore = function(a) {
                var b = this.getItem(a);
                b && (b.isIgnored = !0)
            }, q.prototype.unignore = function(a) {
                var b = this.getItem(a);
                b && delete b.isIgnored
            }, q.prototype.stamp = function(a) {
                if (a = this._find(a)) {
                    this.stamps = this.stamps.concat(a);
                    for (var b = 0, c = a.length; c > b; b++) {
                        var d = a[b];
                        this.ignore(d)
                    }
                }
            }, q.prototype.unstamp = function(a) {
                if (a = this._find(a))
                    for (var b = 0, c = a.length; c > b; b++) {
                        var d = a[b];
                        e(d, this.stamps), this.unignore(d)
                    }
            }, q.prototype._find = function(a) {
                return a ? ("string" == typeof a && (a =
                      this.element.querySelectorAll(a)), a = d(a)) : void 0
            }, q.prototype._manageStamps = function() {
                if (this.stamps && this.stamps.length) {
                    this._getBoundingRect();
                    for (var a = 0, b = this.stamps.length; b > a; a++) {
                        var c = this.stamps[a];
                        this._manageStamp(c)
                    }
                }
            }, q.prototype._getBoundingRect = function() {
                var a = this.element.getBoundingClientRect(),
                    b = this.size;
                this._boundingRect = {
                    left: a.left + b.paddingLeft + b.borderLeftWidth,
                    top: a.top + b.paddingTop + b.borderTopWidth,
                    right: a.right - (b.paddingRight + b.borderRightWidth),
                    bottom: a.bottom - (b.paddingBottom + b.borderBottomWidth)
                }
            }, q.prototype._manageStamp = k, q.prototype._getElementOffset =
                function(a) {
                var b = a.getBoundingClientRect(),
                    c = this._boundingRect,
                    d = n(a),
                    e = {
                        left: b.left - c.left - d.marginLeft,
                        top: b.top - c.top - d.marginTop,
                        right: c.right - b.right - d.marginRight,
                        bottom: c.bottom - b.bottom - d.marginBottom
                    };
                return e
            }, q.prototype.handleEvent = function(a) {
                var b = "on" + a.type;
                this[b] && this[b](a)
            }, q.prototype.bindResize = function() {
                this.isResizeBound || (c.bind(a, "resize", this),
                    this.isResizeBound = !0)
            }, q.prototype.unbindResize = function() {
                this.isResizeBound && c.unbind(a, "resize", this),
              this.isResizeBound = !1
            }, q.prototype.onresize = function() {
                function a() {
                    b.resize(), delete b.resizeTimeout
                }
                this.resizeTimeout && clearTimeout(this.resizeTimeout);
                var b = this;
                this.resizeTimeout = setTimeout(a, 100)
            }, q.prototype.resize = function() {
                this.isResizeBound && this.needsResizeLayout() && this.layout()
            }, q.prototype.needsResizeLayout = function() {
                var a = n(this.element),
                    b = this.size && a;
                return b && a.innerWidth !== this.size.innerWidth
            }, q.prototype.addItems = function(a) {
                var b = this._itemize(a);
                return b.length && (this.items = this.items.concat(b)), b
            }, q.prototype.appended = function(a) {
                var b = this.addItems(a);
                b.length && (this.layoutItems(b, !0), this.reveal(b))
            }, q.prototype.prepended = function(a) {
                var b = this._itemize(a);
                if (b.length) {
                    var c = this.items.slice(0);
                    this.items = b.concat(c), this._resetLayout(),
                    this._manageStamps(), this.layoutItems(b, !0),
                      this.reveal(b), this.layoutItems(c)
                }
            }, q.prototype.reveal = function(a) {
                var b = a && a.length;
                if (b)
                    for (var c = 0; b > c; c++) {
                        var d = a[c];
                        d.reveal()
                    }
            }, q.prototype.hide = function(a) {
                var b = a && a.length;
                if (b)
                    for (var c = 0; b > c; c++) {
                        var d = a[c];
                        d.hide()
                    }
            }, q.prototype.getItem = function(a) {
                for (var b = 0, c = this.items.length; c > b; b++) {
                    var d = this.items[b];
                    if (d.element === a) return d
                }
            }, q.prototype.getItems = function(a) {
                if (a && a.length) {
                    for (var b = [], c = 0, d = a.length; d > c; c++) {
                        var e = a[c],
                            f = this.getItem(e);
                        f && b.push(f)
                    }
                    return b
                }
            }, q.prototype.remove = function(a) {
                a = d(a);
                var b = this.getItems(a);
                if (b && b.length) {
                    this._itemsOn(b, "remove", function() {
                        this.emitEvent("removeComplete", [this, b])
                    });
                    for (var c = 0, f = b.length; f > c; c++) {
                        var g = b[c];
                        g.remove(), e(g, this.items)
                    }
                }
            }, q.prototype.destroy = function() {
                var a = this.element.style;
                a.height = "", a.position = "", a.width = "";
                for (var b = 0, c = this.items.length; c > b; b++) {
                    var d = this.items[b];
                    d.destroy()
                }
                this.unbindResize();
                var e = this.element.outlayerGUID;
                delete s[e], delete this.element.outlayerGUID, j &&
                  j.removeData(this.element, this.constructor.namespace)
            }, q.data = function(a) {
                var b = a && a.outlayerGUID;
                return b && s[b]
            }, q.create = function(a, c) {
                function d() {
                    q.apply(this, arguments)
                }
                return Object.create ? d.prototype = Object.create(q.prototype)
                  : b(d.prototype, q.prototype), d.prototype.constructor = d,
                  d.defaults = b({}, q.defaults), b(d.defaults, c),
                  d.prototype.settings = {}, d.namespace = a, d.data = q.data,
                    d.Item = function() {
                    p.apply(this, arguments)
                }, d.Item.prototype = new p, g(function() {
                    for (var b = f(a), c = h.querySelectorAll(".js-" + b), e =
                        "data-" + b + "-options", g = 0, k = c.length; k > g;
                        g++) {
                        var l, m = c[g],
                            n = m.getAttribute(e);
                        try {
                            l = n && JSON.parse(n)
                        } catch (o) {
                            i && i.error("Error parsing " + e + " on " +
                                m.nodeName.toLowerCase() + (m.id ? "#" + m.id :
                                  "") + ": " + o);
                            continue
                        }
                        var p = new d(m, l);
                        j && j.data(m, a, p)
                    }
                }), j && j.bridget && j.bridget(a, d), d
            }, q.Item = p, q
        }
        var h = a.document,
            i = a.console,
            j = a.jQuery,
            k = function() {},
            l = Object.prototype.toString,
            m = "function" == typeof HTMLElement || "object" == typeof
              HTMLElement ? function(a) {
                return a instanceof HTMLElement
            } : function(a) {
                return a && "object" == typeof a && 1 === a.nodeType && "string"
                  == typeof a.nodeName
            },
            n = Array.prototype.indexOf ? function(a, b) {
                return a.indexOf(b)
            } : function(a, b) {
                for (var c = 0, d = a.length; d > c; c++)
                    if (a[c] === b) return c;
                return -1
            };
        "function" == typeof define && define.amd ? define("outlayer/outlayer",
            ["eventie/eventie", "doc-ready/doc-ready",
            "eventEmitter/EventEmitter", "get-size/get-size",
            "matches-selector/matches-selector", "./item"], g) : "object" ==
          typeof exports ? module.exports = g(require("eventie"),
              require("doc-ready"), require("wolfy87-eventemitter"),
              require("get-size"), require("desandro-matches-selector"),
              require("./item")) : a.Outlayer = g(a.eventie, a.docReady,
              a.EventEmitter, a.getSize, a.matchesSelector, a.Outlayer.Item)
    }(window),
    function(a) {
        function b(a, b) {
            var d = a.create("masonry");
            return d.prototype._resetLayout = function() {
                this.getSize(), this._getMeasurement("columnWidth",
                    "outerWidth"), this._getMeasurement("gutter", "outerWidth"),
              this.measureColumns();
                var a = this.cols;
                for (this.colYs = []; a--;) this.colYs.push(0);
                this.maxY = 0
            }, d.prototype.measureColumns = function() {
                if (this.getContainerWidth(), !this.columnWidth) {
                    var a = this.items[0],
                        c = a && a.element;
                    this.columnWidth = c && b(c).outerWidth ||
                      this.containerWidth
                }
                this.columnWidth += this.gutter, this.cols =
                  Math.floor((this.containerWidth + this.gutter) /
                      this.columnWidth), this.cols = Math.max(this.cols, 1)
            }, d.prototype.getContainerWidth = function() {
                var a = this.options.isFitWidth ? this.element.parentNode :
                  this.element,
                    c = b(a);
                this.containerWidth = c && c.innerWidth
            }, d.prototype._getItemLayoutPosition = function(a) {
                a.getSize();
                var b = a.size.outerWidth % this.columnWidth,
                    d = b && 1 > b ? "round" : "ceil",
                    e = Math[d](a.size.outerWidth / this.columnWidth);
                e = Math.min(e, this.cols);
                for (var f = this._getColGroup(e), g = Math.min.apply(Math, f),
                    h = c(f, g), i = {
                        x: this.columnWidth * h,
                        y: g
                    }, j = g + a.size.outerHeight, k = this.cols + 1 - f.length,
                    l = 0; k > l; l++) this.colYs[h + l] = j;
                return i
            }, d.prototype._getColGroup = function(a) {
                if (2 > a) return this.colYs;
                for (var b = [], c = this.cols + 1 - a, d = 0; c > d; d++) {
                    var e = this.colYs.slice(d, d + a);
                    b[d] = Math.max.apply(Math, e)
                }
                return b
            }, d.prototype._manageStamp = function(a) {
                var c = b(a),
                    d = this._getElementOffset(a),
                    e = this.options.isOriginLeft ? d.left : d.right,
                    f = e + c.outerWidth,
                    g = Math.floor(e / this.columnWidth);
                g = Math.max(0, g);
                var h = Math.floor(f / this.columnWidth);
                h -= f % this.columnWidth ? 0 : 1, h = Math.min(this.cols - 1,
                    h);
                for (var i = (this.options.isOriginTop ? d.top : d.bottom) +
                    c.outerHeight, j = g; h >= j; j++) this.colYs[j] =
                  Math.max(i, this.colYs[j])
            }, d.prototype._getContainerSize = function() {
                this.maxY = Math.max.apply(Math, this.colYs);
                var a = {
                    height: this.maxY
                };
                return this.options.isFitWidth && (a.width =
                    this._getContainerFitWidth()), a
            }, d.prototype._getContainerFitWidth = function() {
                for (var a = 0, b = this.cols; --b && 0 === this.colYs[b];) a++;
                return (this.cols - a) * this.columnWidth - this.gutter
            }, d.prototype.needsResizeLayout = function() {
                var a = this.containerWidth;
                return this.getContainerWidth(), a !== this.containerWidth
            }, d
        }
        var c = Array.prototype.indexOf ? function(a, b) {
            return a.indexOf(b)
        } : function(a, b) {
            for (var c = 0, d = a.length; d > c; c++) {
                var e = a[c];
                if (e === b) return c
            }
            return -1
        };
        "function" == typeof define && define.amd ? define(["outlayer/outlayer",
            "get-size/get-size"], b) : "object" == typeof exports ?
          module.exports = b(require("outlayer"), require("get-size")) :
          a.Masonry = b(a.Outlayer, a.getSize)
    }(window);
var container = document.querySelector('#container');
var item = container.children[0];
for (var i = 0; i < 20; ++i) {
  container.appendChild(item.cloneNode(true));
}
document.body.style.display = 'block';
window.done = false;
window.brick = function() {
  var mason = new Masonry(container, {
    itemSelector: '.item',
  });
  function relayout(i) {
    if (i === 30) {
      window.done = true;
      return;
    }
    requestAnimationFrame(function() {
      mason.element.style.maxWidth = '950px';
      mason.layout();
      requestAnimationFrame(function() {
        mason.element.style.maxWidth = '200px';
        mason.layout();
        requestAnimationFrame(function() {
          relayout(i + 1);
        });
      });
    });
  }
  relayout(0);
};
</script>
